Put it simple , The Windows Update KB967715 is not getting installed or is prompting to be reinstalled by Windows Update. Read on and post comments if it does not work. Now I am puting this under Windows XP because I do not think that there is an update available for Vista on the same. So here is what you gotta do :
Remove any Roxio DLA software
Take off Roxio DLA from Add remove programs ( if available )
Download and run this patch
(will update this soon)
Remove and Reinstall
Remove the KB967715 update from Add/Remove programs list and then reboot system in Safe mode with Networking.
Download a copy of the KB967715 from here , save and run the application.